Notes Payable - Borrowings Outstanding (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Notes Payable
Less: current portion	$ (2,074)
Long-term notes payable	22,987	$ 25,007
Credit Agreement
Notes Payable
Borrowings outstanding	25,000	25,000	$ 25,000
Accrued exit fee	223	180
Less: unamortized discount	162	173
Borrowings	25,061	25,007
Less: current portion	(2,074)
Long-term notes payable	$ 22,987	$ 25,007